Civil Engineering Professor Panos D. Prevedouros, PhD discusses his opinions on infrastructure issues with emphasis on the City and County of Honolulu.

Saturday, March 2, 2013

Poop Powers Zoom Zoom!

Furthering the efforts of recycling, re-use and sustainability, Bristol, UK water and sewer company has developed infrastructure to produce methane-based biogas from sewage waste, clean it from its high content of CO2 and fuel cars with it.

Remarkably, they claim that... poop from 70 homes can power this Bug for 10,000 miles!

Compressed Natural Gas is not new as a fuel for vehicles. Just to name a few, Athens, Rome, Seattle-Tacoma and Seoul use GNG in all or most of their public transit bus fleets. Australia has tens of thousands of private cars powered by CNG or LPG, which is liquefied petroleum gas.

The main sources are, as their name implies, Natural Gas and Petroleum Gas. A third source of methane is organic matter decomposition (which actually created natural gas in the strata of the earth over the millennia.)

Renewable sources of organic matter include biomass, food waste and ... poop. Sludge, the accumulation of solids at waste treatment plants, is often problematic even for cities like Honolulu which has two Waste-to-Energy facilities, so it typically up in the landfill. (Honolulu had a contract to develop fertilized pellets from it, but the venture was not successful.)

The dumping of thousands of tons of sludge is, of course, a lose-lose situation because of the loss of land and the loss of an energy source at the same time. Bristol's Wessex Water has developed and biogas and demonstrated the Bio-Bug, which other than a simple modification to the fuel supply and storage system remains a conventional Bug with the original engine (and in most similar applications the car is switchable on-the-fly between gasoline and methane/propane/butane.)

Brief Information about Panos

Panos D. Prevedouros, Ph.D. is a professor of traffic and transportation engineering at the Department of Civil Engineering, Univ. of Hawaii-Manoa since 1990.
Panos graduated from the Aristotle Univ. of Greece in 1984, and with Masters and PhD degrees in 1990 from Northwestern Univ. (Evanston, IL), a leading academic institution in engineering and transportation.
He chairs the Freeway Simulation Subcommittee of the Transportation Research Board. He was president of the Hawaii Highway Users Alliance from 2006 to 2008.
Panos co-authored a Transportation Engineering textbook and over 100 reports and technical papers. He received the 2005 Van Wagoner Award of the Institute of Transportation Engineers.
He co-organized the 1st International Symposium on Freeway Operations (ISFO) in Athens, Greece, and the 2nd ISFO in Honolulu in June 2009.
Dr. Prevedouros served in the Transit Advisory Task Force in 2006 and in the Technology Selection Expert Panel in 2008 of the City Council of Honolulu.
He run for mayor of Honolulu in the 2008 elections and finished 3rd in the primary elections with 18% of the vote from a field of nine candidates.